Jackson, Wyoming · field elev 6,451 ft
Density Altitude at Jackson Hole (KJAC)
Jackson Hole is a genuine high-and-hot field: from 6,451 ft of elevation, a typical July afternoon (82 °F) pushes density altitude to about 9,320 ft — the airplane performs like it is 2,869 ft above the field before the wheels roll.
Typical density altitude by month
| Month | Avg temp °F | DA at avg temp | Afternoon high °F | DA on a typical afternoon |
|---|---|---|---|---|
| January | 14.3 | 5,002 ft | 27.4 | 5,898 ft ▲ |
| February | 19.2 | 5,341 ft | 32.3 | 6,226 ft ▲ |
| March | 28.2 | 5,952 ft | 41.7 | 6,843 ft ▲ |
| April | 36.9 | 6,530 ft | 50.2 | 7,390 ft ▲ |
| May | 47.1 | 7,192 ft | 61.5 | 8,098 ft ⚠ |
| June | 54.9 | 7,687 ft | 71.1 | 8,686 ft ⚠ |
| July | 62.7 | 8,173 ft | 81.7 | 9,320 ft ⚠ |
| August | 61.2 | 8,080 ft | 80.7 | 9,261 ft ⚠ |
| September | 52.5 | 7,535 ft | 70.8 | 8,668 ft ⚠ |
| October | 40.3 | 6,752 ft | 55.6 | 7,731 ft ▲ |
| November | 27.4 | 5,898 ft | 39.3 | 6,687 ft ▲ |
| December | 16.2 | 5,134 ft | 28.2 | 5,952 ft ▲ |
▲ above 5,000 ft · ⚠ above 8,000 ft. These are planning references at standard pressure and dry air — afternoon humidity and low pressure both push the real number higher. Run today's values below.
Run today’s numbers for KJAC
DENSITY ALTITUDE high DA
Field elevation 6,451 ft — the air behaves like 9,337 ft.
- PRESSURE ALT
- 6,453 ft
- ISA DEVIATION
- —
- RULE-OF-THUMB DA
- —
- AIR DENSITY INDEX
- —
- AIR DENSITY
- —
- WATER · GRAINS/LB
- —
For training and reference · verify with official sources and your POH before flight · no tool on this site renders a go / no-go judgment
Nearby Wyoming fields
- 46U — Alpine
Alpine · elev 5,637 ft
- KDUB — Dubois Municipal
Dubois · elev 7,299 ft
- KAFO — Afton Lincoln County/General Boyd L Eddins Field
Afton · elev 6,221 ft
- KPNA — Ralph Wenz Field
Pinedale · elev 7,096 ft
- KBPI — Miley Meml Field
Big Piney · elev 6,994 ft
- KCOD — Yellowstone Regional
Cody · elev 5,102 ft
- U06 — Cokeville Municipal
Cokeville · elev 6,270 ft
- KLND — Hunt Field
Lander · elev 5,589 ft
Frequently asked questions
How high does density altitude get at KJAC in summer?
On a typical July afternoon — around 82 °F at the nearest NOAA normals station — density altitude at Jackson Hole reaches roughly 9,320 ft at standard pressure. Hotter-than-normal days, low pressure, and humidity all push it higher, so run the day's actual numbers before flying.
What is the density altitude at KJAC on an average day?
It swings with the seasons: from roughly 5,002 ft at the coldest month's average temperature to about 8,173 ft at the warmest month's — all from a constant field elevation of 6,451 ft. The month-by-month table above carries the full year.
What is the field elevation of Jackson Hole?
6,451 ft MSL, from the FAA NASR airport record (28-day cycle effective 2026-08-06). The identifier is KJAC (ICAO) / JAC (FAA), in Jackson, Wyoming.